Dettson
Electrical Overload / Short Circuit
Dettson furnace frequently trips the household circuit breaker.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Shorted blower motor windings, Shorted inducer motor, Damaged wiring harness, Incorrect breaker size for furnace load
How to Fix / Troubleshooting
Safety first: Repeated breaker tripping indicates a potentially serious electrical fault. Do not bypass or oversize the breaker.
- 1. Inspect wiring: With power off, check visible wiring for cuts, burns, or melted insulation. Repair or replace damaged sections.
- 2. Check motors for shorts: Disconnect blower and inducer motors one at a time and try powering the furnace. If the breaker stops tripping when a motor is disconnected, that motor is likely faulty.
- 3. Verify breaker size: Confirm the breaker matches the furnace nameplate rating. An undersized breaker may nuisance-trip and should be corrected by an electrician.
- 4. Replace faulty components: Shorted motors or wiring harnesses must be replaced with Dettson-approved parts.
Advertisements
Repair Difficulty
Hard
4/5
Advertisements